{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2024-43817 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2024-43817 is a medium-severity denial of service vulnerability in Linux kernel, published on 17 Aug 2024. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2024-43817 and fix it if it is affected.\n\nWhat it is: CVE-2024-43817 is a medium-severity denial of service vulnerability in Linux kernel, published on 17 Aug 2024. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2024-43817 in the wild and no public exploit code.\n\nAffected product: Linux kernel. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2024-43817/ (Markdown: https://insights.sbomify.com/CVE-2024-43817/index.md)","id":"CVE-2024-43817","markdown":"https://insights.sbomify.com/CVE-2024-43817/index.md","name":"CVE-2024-43817","record":{"aliases":["AZL-48489","BELL-CVE-2024-43817","DEBIAN-CVE-2024-43817","GHSA-6xh6-65h6-5hr6","ROOT-OS-DEBIAN-11-CVE-2024-43817","UBUNTU-CVE-2024-43817"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"low_privilege","summary":"Missing checks in the Linux kernel's virtio_net_hdr_to_skb function allow attackers to trigger kernel crashes via crafted network packets.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[{"product":"linux_kernel","vendor":"linux"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: missing check virtio\n\nTwo missing check in virtio_net_hdr_to_skb() allowed syzbot\nto crash kernels again\n\n1. After the skb_segment function the buffer may become non-linear\n(nr_frags != 0), but since the SKBTX_SHARED_FRAG flag is not set anywhere\nthe __skb_linearize function will not be executed, then the buffer will\nremain non-linear. Then the condition (offset \u003e= skb_headlen(skb))\nbecomes true, which causes WARN_ON_ONCE in skb_checksum_help.\n\n2. The struct sk_buff and struct virtio_net_hdr members must be\nmathematically related.\n(gso_size) must be greater than (needed) otherwise WARN_ON_ONCE.\n(remainder) must be greater than (needed) otherwise WARN_ON_ONCE.\n(remainder) may be 0 if division is without remainder.\n\noffset+2 (4191) \u003e skb_headlen() (1116)\nWARNING: CPU: 1 PID: 5084 at net/core/dev.c:3303 skb_checksum_help+0x5e2/0x740 net/core/dev.c:3303\nModules linked in:\nCPU: 1 PID: 5084 Comm: syz-executor336 Not tainted 6.7.0-rc3-syzkaller-00014-gdf60cee26a2e #0\nHardware name: Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023\nRIP: 0010:skb_checksum_help+0x5e2/0x740 net/core/dev.c:3303\nCode: 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 52 01 00 00 44 89 e2 2b 53 74 4c 89 ee 48 c7 c7 40 57 e9 8b e8 af 8f dd f8 90 \u003c0f\u003e 0b 90 90 e9 87 fe ff ff e8 40 0f 6e f9 e9 4b fa ff ff 48 89 ef\nRSP: 0018:ffffc90003a9f338 EFLAGS: 00010286\nRAX: 0000000000000000 RBX: ffff888025125780 RCX: ffffffff814db209\nRDX: ffff888015393b80 RSI: ffffffff814db216 RDI: 0000000000000001\nRBP: ffff8880251257f4 R08: 0000000000000001 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000001 R12: 000000000000045c\nR13: 000000000000105f R14: ffff8880251257f0 R15: 000000000000105d\nFS:  0000555555c24380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000\nCS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033\nCR2: 000000002000f000 CR3: 0000000023151000 CR4: 00000000003506f0\nDR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000\nDR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400\nCall Trace:\n \u003cTASK\u003e\n ip_do_fragment+0xa1b/0x18b0 net/ipv4/ip_output.c:777\n ip_fragment.constprop.0+0x161/0x230 net/ipv4/ip_output.c:584\n ip_finish_output_gso net/ipv4/ip_output.c:286 [inline]\n __ip_finish_output net/ipv4/ip_output.c:308 [inline]\n __ip_finish_output+0x49c/0x650 net/ipv4/ip_output.c:295\n ip_finish_output+0x31/0x310 net/ipv4/ip_output.c:323\n NF_HOOK_COND include/linux/netfilter.h:303 [inline]\n ip_output+0x13b/0x2a0 net/ipv4/ip_output.c:433\n dst_output include/net/dst.h:451 [inline]\n ip_local_out+0xaf/0x1a0 net/ipv4/ip_output.c:129\n iptunnel_xmit+0x5b4/0x9b0 net/ipv4/ip_tunnel_core.c:82\n ipip6_tunnel_xmit net/ipv6/sit.c:1034 [inline]\n sit_tunnel_xmit+0xed2/0x28f0 net/ipv6/sit.c:1076\n __netdev_start_xmit include/linux/netdevice.h:4940 [inline]\n netdev_start_xmit include/linux/netdevice.h:4954 [inline]\n xmit_one net/core/dev.c:3545 [inline]\n dev_hard_start_xmit+0x13d/0x6d0 net/core/dev.c:3561\n __dev_queue_xmit+0x7c1/0x3d60 net/core/dev.c:4346\n dev_queue_xmit include/linux/netdevice.h:3134 [inline]\n packet_xmit+0x257/0x380 net/packet/af_packet.c:276\n packet_snd net/packet/af_packet.c:3087 [inline]\n packet_sendmsg+0x24ca/0x5240 net/packet/af_packet.c:3119\n sock_sendmsg_nosec net/socket.c:730 [inline]\n __sock_sendmsg+0xd5/0x180 net/socket.c:745\n __sys_sendto+0x255/0x340 net/socket.c:2190\n __do_sys_sendto net/socket.c:2202 [inline]\n __se_sys_sendto net/socket.c:2198 [inline]\n __x64_sys_sendto+0xe0/0x1b0 net/socket.c:2198\n do_syscall_x64 arch/x86/entry/common.c:51 [inline]\n do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82\n entry_SYSCALL_64_after_hwframe+0x63/0x6b\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"net: missing check virtio","id":"CVE-2024-43817","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"linux:linux_kernel","products":["linux:linux_kernel"],"type":"denial_of_service","year":"2024"},"n_packages":0,"n_references":5,"next":{"headline":"ASoC: amd: Adjust error handling in case of absent codec device","id":"CVE-2024-43818"},"packages":[],"prev":{"headline":"scsi: lpfc: Revise lpfc_prep_embed_io routine with proper endian macro usages","id":"CVE-2024-43816"},"products":["Linux"],"published":"2024-08-17","related":[{"cvss_score":8.8,"headline":"Linux Kernel Out-of-Bounds Write","id":"CVE-2026-53266","kev_date_added":"2026-09-18","published":"2026-06-25"},{"cvss_score":8.8,"headline":"Linux Kernel Improper Input Validation","id":"CVE-2013-6282","kev_date_added":"2022-09-15","published":"2013-11-19"},{"cvss_score":8.4,"headline":"Linux Kernel Heap-Based Buffer Overflow","id":"CVE-2022-0185","kev_date_added":"2024-08-21","published":"2022-02-11"},{"cvss_score":8.4,"headline":"Linux Kernel Privilege Escalation","id":"CVE-2013-2094","kev_date_added":"2022-09-15","published":"2013-05-14"},{"cvss_score":7.8,"headline":"Linux Kernel Unspecified","id":"CVE-2026-53362","kev_date_added":"2026-08-27","published":"2026-07-04"},{"cvss_score":7.8,"headline":"Linux Kernel Missing Initialization of a Variable","id":"CVE-2026-46300","kev_date_added":"2026-10-28","published":"2026-05-23"},{"cvss_score":7.8,"headline":"Linux Kernel Race Condition","id":"CVE-2025-39964","kev_date_added":"2026-09-18","published":"2025-10-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-23","vendors":["Linux"]},"summary":"Missing checks in the Linux kernel's virtio_net_hdr_to_skb function allow attackers to trigger kernel crashes via crafted network packets.","url":"https://insights.sbomify.com/CVE-2024-43817/"}